Gas-stove



(NoModeL) J. L. SHARP.

GAS STOVE.

No. 472,144. Pat ented Apr. 5, 1892.

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NITED STATES Erica.

PATENT JAMES L. SHARP, OF NEW ROCHELLE, NEW YORK.

G A S S T O V E SPECIFICATION forming part of Letters Patent N 0.472,144, dated April 5, 1892. Application filed May 29, 1891. Serial No.394,470. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES L. SHARP, a resident of New Rochelle, countyof Westchester, and State of New York, have invented a new and usefulImprovement in Gas-Stoves, of which the following is a specification.

My invention relates to an improvement in gas-stoves, and has for itsobject to improve the construction of the burner for said stoves and tosupply the same with a proper quantity of air.

The invention consists of the new combinations and construction ofparts, hereinafter more fully specified and claimed.

In the drawings, Figure 1 represents a sectional view taken on the line1 1, Fig. 2, of my improved gas-stove. Fig. 2 is a plan view of saidstove, the burner-plate being shown partially broken away. Fig. 3 is anenlarged view, partially sectional, of a portion of the upper part of myimproved gas-burner. Figs. i and 5 are plan views of two forms of myimproved burner-plate, and Fig. 6 is a cross-section on the line 6 6 ofFig. 5.

A is the outside casing of the gas-stove.

B is the gas-pipe, provided with a suitable screw-nozzle a.

D is a strap-shaped or similar band of metal serving to support theburner within the casing A of the stove. In fact, the nozzle ais bypreference screwed into this strap or plate D, as shown.

E are air-pipes, each open at the upper end for the admission of air andeach joined at the lower end to a hub 19, which is screwed upon orotherwise connected with the nozzle a.

F is the mixing-tube screwed or similarly attached to the screw-socketcl, formed at the junction of the air-pipes E directly above the nozzlea. It will be seen that each air-pipe E is entirely on one side of themixing-tube F, j oiningit at the lower end. By this arrangement manyadvantages over an air-pipe surrounding the miXing-tube are obtained.

G is the burner screwed or otherwise securedto the upperend of tube F.This burner carries the wire-gauze e and the burner-plate H. Thisburner-plate I prefer to form, as shown in Figs. 5 and 6, with curvedslots f, the metal near each slot being reinforced by projecting ribs g.The said burner-plate H may, however, have the slots f straight, as inFig. 2, or cross-shaped, as in Fig. 4, the ribsg being either on theunder side, as in Fig-6, or on the upper side, as in Figs. 2 and 4. Whenthe ribs gare on the under side, as in the preferred form shown in Fig.6, a hollow or cavity h is formed between them, which cavity serves todirect the fuel downward and outward before it enters the slots f. Thetop of the plate H is provided with two or more wedge-shaped projectionsi,which are adapted to slide under or to be caught by lips or lugs j onthe rim of the burner, and with a notch K of a size and shape sufficientto admit of the plate H being withdrawn when the wedgeshaped projections2' are no longer under the lips j and when the notch K and one lip jcoincide.

One or each of the air-pipes E may be provided with dampers J or similarcontrivances to regulate the amount of air to be admitted to said pipesand mixed with the gas.

The operation is as follows: Gas enters the pipe B and passes upwardinto the mixingtube F, together with air from the air-tubes E. From themixing-tube F the gas and air thoroughly mixed in suitable proportionspass into the burner G and thence through the slotted burner-plate H.The burner-plate H, by reason of the shape of the slots and theconcavity of its under surface in the preferred form shown in Figs. 5and 6, throws the fuel upward in curving form. The reinforcement of theslots f by the ribs or ridges g protects said burner-plate from warpingor cracking under the heat imparted to it by the flame. The wedge-shapedprojections c of this burnerplate, together with the lipped projectionsj of the burner and the notch K, furnish a simple and durable means forthe easy removal from and retention of the burner-plate within the rimof the burner. This facilitates the cleansing of the burner and permitsof the use of diversely-slotted burner-plates for special purposes andfor the renewal of the burnerplate should the same wear out. As to theair-pipes one or more may be used. These air-pipes being joined to thesocket d and hub I) admit of the casting of a number or series of suchpipes with little cost, and the whole arrangement may be fitted up ortaken apart with little trouble or skill. The separate pipes E E admitof the use of dampers, which could not be used in the ordinary annularairsupply pipe. The object of these dampers J is to regulate the amountof air to be mixed with the gas according to the pressure of the gas.One or more of said air-pipes may be provided with such a damper, andthus one or more of said air-pipes may be wholly or partially shut off.In my present improvement the flow and mixture of the air with the gasis greatly facilitated. The action of the burner G creates a suctionwhich draws the air downward through the pipe or pipes E into directcontact with the gas at a point directly beneath the pipe F.

Having thus described my invention what I claim is- 1. The combinationof one air-pipe E or more, having hub Z; and socket (1, with the gaspipeB and mixing-tube F, said air-pipe being open at the upper end andarranged wholly on one side of said mixing-tube F and communicating withthe lower end thereof, and with the burner G and burner-plate I-I,substantially as and for the purposes set forth. 2. The combination ofone air-pipe E or more, having hub Z) and socket d,witl1 the gas-pipe Band mixing-tube F, said air-pipe being open at the upper end andarranged wholly on one side of said mixing-tube]? and communicating withthe lower end thereof, and with the burner G and burner-plate II, andwith one or more dampers J in said pipe or pipes, substantially as andfor the purposes set forth.

JAMES L. SHARP. Witnesses:

HARRY M. TURK, L. M. WAcnscHLAcEn.

